Re: reordering GtkListStore items

[Paul Pogonyshev <pogonyshev gmx net>]

David M. Cook wrote:
> On Sat, Mar 20, 2004 at 01:03:08AM +0200, Paul Pogonyshev wrote:
>
> > Is there an easy way to swap a given list store item with
> > next/previous item?  I'm facing two problems: there appear
> > to be no reordering functions in GTK+ 2.0 (all marked as
> > "since 2.2") and there is gtk_tree_model_iter_next(), but
> > no gtk_tree_mode_iter_previous().
>
> In Python:
>
> path = store.get_path(iter)
> i = path[-1] # last index of path
> parent = store.iter_parent(iter)
> if i > 0:
>    previous = store.iter_nth_child(parent, i-1)
> else:
>    previous = None
>    
> Or even simpler (though I don't know how to do the path aritmetic in C)
>
> path = store.get_path(iter)
> if path[-1] > 0:
>   previous = store.get_iter(path[:-1] + (path[-1]+1,))
> else:
>   previous = None

Thank you, this worked.  I solved the second problem (with lack of
reording functions in GTK+ 2.0) too: instead of swapping items I
just swap their data with gtk_list_store_set().

Paul